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astronautix.com Potok


Article Number: 11F663. Code Name: Geizer. Class: Communications. Type: Military. Nation: USSR. Manufacturer: NPO PM.

Potok was one element of the second generation global command and control system (GKKRS) developed according to a decree of 17 February 1976. The first of ten spacecraft was launched as Cosmos 1366 in 1982. These satellites were integrated with the Luch geostationary system and featured retransmission of high rate data retransmission in the centimetre wavelength range. While Luch handled communications between spacecraft and ground stations, Potok handled communications between fixed points and digital data from the Yantar-4KS1 electroptical reconnaissance satellite. Potok was the first communications spacecraft built by the Lavochkin design bureau and used the Splav-2 transponder by NPO Elas.

Potok is said by one account to have utilized the KAUR-4 spacecraft bus. This had an active 3-axis orientation system, with a single central body from which extended 40 square metres of solar panels. Its basic structure was that of the KAUR-3, but it was equipped with completely new systems: a digital computer, plasma station-keeping engines, hydrazine monopropellant orientation engines, and actively-scanned antennae arrays with 0.5 degrees antenna and 0.1 degree spacecraft pointing accuracy.


Specification

Total Mass: 2,100 kg.


Potok Chronology


17 February 1976 Energia, Buran, Mir, Luch, Potok approved; N1 formally cancelled. Launch Vehicle: N1, N1F, Energia.

Central Committee of the Communist Party and Council of Soviet Ministers Decree 'On work on Energia-Buran, DOS-7K nos. 7 and 8, Gamma. Geyzer (Potok), and Altair (Luch) and cancellation of the N1' was issued. The design of an improved model of the Salyut DOS-17K space station was authorised as part of the third generation of Soviet space systems in a decree. At that time it was planned that the two stations (DOS-7 and DOS-8) would be equipped with two docking ports at either end of the station and an additional two ports at the sides of the forward small diameter compartment. Luch and Potok were elements of the second generation global command and control system (GKKRS) deployed in the first half of the 1980's. Luch satellites, analogous to the US TDRS, provided communications service to the Mir space station, Buran space shuttle, Soyuz-TM spacecraft, military satellites, and the TsUPK ground control center. They also served to provide mobile fleet communications for the Soviet Navy.


18 May 1982 Cosmos 1366 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,000 kg. Perigee: 35,771 km. Apogee: 35,805 km. Inclination: 9.4 deg.

Stationed at 80 deg E. Investigation of outer space; experiments in relaying telegraph and telephone information in the centimetre wavelength range.


02 March 1984 Cosmos 1540 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,000 kg. Perigee: 35,761 km. Apogee: 35,807 km. Inclination: 8.1 deg.

Stationed at 79 deg E. Investigation of outer space; experiments in relaying telegraph and telephone information in the centimetre wavelength range.


04 April 1986 Cosmos 1738 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,000 kg. Perigee: 35,712 km. Apogee: 35,847 km. Inclination: 5.6 deg.

Stationed at 13.5 deg W. Continuation of the investigation of outer space; experimental retransmission of telephone and telegraph data in the centimetre band.


01 October 1987 Cosmos 1888 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,000 kg. Perigee: 35,772 km. Apogee: 35,804 km. Inclination: 4.0 deg.

Stationed at 80 deg E; later moved to 13.5 deg W. Communications experiments. Investigation of outer space; relaying of telephone and telegraph information.


02 August 1988 Cosmos 1961 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,000 kg. Perigee: 35,778 km. Apogee: 35,803 km. Inclination: 3.2 deg.

Stationed at 13.5 deg W; later moved to 80 deg E. Investigation of outer space and relay of telegraph and telephone messages.


19 July 1990 Cosmos 2085 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,150 kg. Perigee: 35,785 km. Apogee: 35,790 km. Inclination: 1.5 deg.

Stationed at 80 deg E. Relaying of telegraph and telephone information.


22 November 1991 Cosmos 2172 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,150 kg. Perigee: 35,776 km. Apogee: 35,798 km. Inclination: 0.3 deg.

Stationed at 13 deg W. Relaying of telegraph and telephone information.


21 September 1994 Cosmos 2291 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,300 kg. Perigee: 35,748 km. Apogee: 35,827 km. Inclination: 1.1 deg.

Stationed at 80 deg E. Relaying of telegraph and telephone information.


30 August 1995 Cosmos 2319 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,300 kg. Perigee: 35,755 km. Apogee: 35,818 km. Inclination: 1.3 deg.

Stationed at 80 deg E. Relaying of telegraph and telephone information.


29 April 1998 Cosmos 2350 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Perigee: 35,788 km. Apogee: 35,793 km. Inclination: 2.1 deg.

Geostationary at 73.0 degrees E.


04 July 2000 Cosmos 2371 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Perigee: 35,770 km. Apogee: 35,802 km. Inclination: 1.1 deg.

Geizer military communications satellite. The Blok DM upper stage inserted the Geizer into geosynchronous orbit at 06:20 GMT on July 5. Stationed at 80 deg E.



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